Results 171 to 180 of about 275,664 (215)

Comparison Study of Noncontact Vital Signs Detection Using a Doppler Stepped-Frequency Continuous-Wave Radar and Camera-Based Imaging Photoplethysmography

open access: closedIEEE Transactions on Microwave Theory and Techniques, 2017
In this paper, we compare the performance of radar and optical (camera based) techniques in detecting vital signs such as respiratory rate (RR), heart rate (HR), and blood oxygen saturation (SpO2). Specifically, we investigate the application of ultrawideband stepped-frequency continuous-wave radar and imaging photoplethysmography (iPPG) techniques to ...
Lingyun Ren   +5 more
semanticscholar   +3 more sources

Ultra-short-term stress measurement using RGB camera-based remote photoplethysmography with reduced effects of Individual differences in heart rate

open access: closedMedical & Biological Engineering & Computing
Stress is linked to health problems, increasing the need for immediate monitoring. Traditional methods like electrocardiograms or contact photoplethysmography require device attachment, causing discomfort, and ultra-short-term stress measurement research remains inadequate.
Seungkeon Lee   +2 more
semanticscholar   +4 more sources

Intraoperative Monitoring of Cerebral Hemodynamics by Camera-Based Photoplethysmography

open access: closedImaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP), 2019
Alexei A. Kamshilin   +2 more
semanticscholar   +3 more sources

STGNet: Spatio-temporal graph neural networks considering inherent properties of physiological signals for camera-based remote photoplethysmography

open access: closedBiomedical Signal Processing and Control
Jiahao Xiong   +6 more
semanticscholar   +3 more sources

Pulse rate variability measurement with camera-based photoplethysmography

open access: closed, 2021
Electrocardiogram (ECG) has been used by doctors and biomedical researchers to measure cardiac parameters such as Heart Rate (HR) and Heart Rate Variability (HRV). HR is a medical index for health monitoring and the HRV is a sign to reflect the activities of Autonomic Nervous System (ANS) and can be used for emotion recognition applications.
Peixi Li
openalex   +3 more sources

Evaluation of arterial oxygen saturation using RGB camera-based remote photoplethysmography

open access: closedOptical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics, 2018
Plethysmogram is the periodic variation in blood volume due to the cardiac pulse traveling through the body. Photo-plethysmograph (PPG) has been widely used to assess the cardiovascular system such as heart rate, blood pressure, cardiac output, vascular compliance.
Hideaki Haneishi   +5 more
openalex   +2 more sources

CAMERA-BASED REMOTE PHOTOPLETHYSMOGRAPHY TO PREDICT BLOOD PRESSURE IN CLINIC PATIENTS WITH CARDIOVASCULAR DISEASE

open access: closedJournal of Hypertension, 2023
Objective: Remote photoplethysmography (rPPG) uses a camera to capture peripheral blood flow. It remains to be seen if rPPG can accurately predict blood pressure (BP). Most studies have included healthy, normotensive subjects. This is the first investigation of rPPG to predict BP for patients with cardiovascular disease (CVD).
Theodore Curran   +6 more
openalex   +2 more sources

Non-Invasive Camera-Based Cardiac Output Monitoring via Facial Photoplethysmography: Advancing Hemodynamic Assessment in Critical Care

open access: closedAnnual International Conference of the IEEE Engineering in Medicine and Biology Society
This study presents a novel non-contact approach for cardiac output (CO) monitoring via facial photoplethysmography (PPG), with a focus on advancing hemodynamic assessment during intravenous fluid bolus (FB) therapy in emergency settings.
Mahdi Momeni   +7 more
openalex   +2 more sources

Effect of defocus blur on the signal distribution of camera-based remote photoplethysmography

open access: closedOptoelectronic Imaging and Multimedia Technology VI, 2019
Shuang Yang, Yudong Zhu, Sailing He
openalex   +2 more sources

Monitoring the Vital Signs of Aircraft Passengers by Camera based Remote Photoplethysmography

2023
Monitoring the vital signs of an aircraft passenger or crew members could be beneficial for various reasons. However, providing contact based sensors during flight is not the preferred method to achieve this goal. With the ubiquity of low-cost digital cameras and advanced image processing algorithms, an image-based remote monitoring of vital signs is ...
Passand, J.   +4 more
openaire   +1 more source

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